Keith McDonald
Bosch Rexroth Industrial Hydraulics
Bosch Rexroth is a manufacturer of hydraulic drive systems and components including power units, cylinders, and electronic controls. The R7 pumping unit is a specially designed hydraulic artificial lift system for crude oil pumping or natural gas dewatering applications. It can be used in applications with rod loads between 15,000-35,000 lbs, and stroke lengths up to 236 inches. It consists of a hydraulic power unit, which is driven by an electric motor, and a hydraulic cylinder, which stands vertically on top of the well head. The power unit also contains an electrical control cabinet with a PLC and an operator touchscreen to input control parameters to the system. Additionally, the power unit contains a
mechanical flywheel, which is mounted directly on the shaft of the electric motor and is used to recover energy during the pumping process